TY - JOUR

T1 - Resonant nuclear spin pumping in (In,Ga)As quantum dots

AU - Cherbunin, R. V.

AU - Flisinski, K.

AU - Gerlovin, I. Ya.

AU - Ignatiev, I. V.

AU - Kuznetsova, M. S.

AU - Petrov, M. Yu.

AU - Yakovlev, D. R.

AU - Reuter, D.

AU - Wieck, A. D.

AU - Bayer, M.

PY - 2011

Y1 - 2011

N2 - We report on the observation of resonant optical pumping of nuclear spin polarization in an ensemble of singly charged (In,Ga)As/GaAs quantum dots subject to a transverse magnetic field. Electron spin orientation by circularly polarized light with the polarization modulated at the nuclear spin transition frequency is found to create a significant nuclear spin polarization, precessing about the magnetic field. Synchronous rf field application along the optical excitation axis considerably enhances the effect. Nuclear spin resonances for all isotopes in the quantum dots are found in that way. In particular, transitions between states split off from the |±1/2⟩ doublets by the nuclear quadrupole interaction are identified.

AB - We report on the observation of resonant optical pumping of nuclear spin polarization in an ensemble of singly charged (In,Ga)As/GaAs quantum dots subject to a transverse magnetic field. Electron spin orientation by circularly polarized light with the polarization modulated at the nuclear spin transition frequency is found to create a significant nuclear spin polarization, precessing about the magnetic field. Synchronous rf field application along the optical excitation axis considerably enhances the effect. Nuclear spin resonances for all isotopes in the quantum dots are found in that way. In particular, transitions between states split off from the |±1/2⟩ doublets by the nuclear quadrupole interaction are identified.

U2 - 10.1103/PhysRevB.84.041304

DO - 10.1103/PhysRevB.84.041304

M3 - статья

VL - 84

SP - 041304_1-4

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 4

ER -